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Implement binding support for returning and accepting Promises in WebIDL.

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This commit is contained in:
Josh Matthews 2016-06-21 19:35:36 -04:00
parent 73b2963509
commit a1091772ec
12 changed files with 217 additions and 20 deletions
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19
components/script/dom/bindings/js.rs
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@ -43,6 +43,7 @@ use std::intrinsics::type_name;
use std::mem;
use std::ops::Deref;
use std::ptr;
use std::rc::Rc;
use style::thread_state;
/// A traced reference to a DOM object
@ -439,6 +440,18 @@ impl<T: Reflectable> LayoutJS<T> {
}
}
/// Get an `&T` out of a `Rc<T>`
pub trait RootedRcReference<T> {
/// Obtain a safe reference to the wrapped non-JS owned value.
fn r(&self) -> &T;
}
impl<T: Reflectable> RootedRcReference<T> for Rc<T> {
fn r(&self) -> &T {
&*self
}
}
/// Get an `Option<&T>` out of an `Option<Root<T>>`
pub trait RootedReference<T> {
/// Obtain a safe optional reference to the wrapped JS owned-value that
@ -446,6 +459,12 @@ pub trait RootedReference<T> {
fn r(&self) -> Option<&T>;
}
impl<T: Reflectable> RootedReference<T> for Option<Rc<T>> {
fn r(&self) -> Option<&T> {
self.as_ref().map(|root| &**root)
}
}
impl<T: Reflectable> RootedReference<T> for Option<Root<T>> {
fn r(&self) -> Option<&T> {
self.as_ref().map(|root| root.r())